Sony just announced the new RX100VI and a new grip:
RX100VI on SonyAlphaRumors. Product page at Sony.net. Info on Dpreview. Info on Explora. Poadcast with Katrin Eismann. Hands-on by ThePhoBlographer. Hands-on by ePhotozine. Hands-on by Engadget. Thoughtrs by That1Cameraguy. Thoughts by Edsel. Hands-on by Photographyblog.
RX grip on SonyAlphaRumors. Product page on Sony.net.
Quick spec sheet:
Product images (Click on them to enlarge):